1. Public Meeting November 9, 2010

2. Agenda  What is the Water Integrated Resources Plan (WIRP)?  How was the WIRP developed?  What are the WIRP major findings?  What are the WIRP Recommendations?  How to provide input on the draft report?  What are your thoughts on what is presented today?

3. WIRP Mission Statement The Pasadena Water Integrated Resources Plan will provide an achievable, long-term strategy to meet current and future water needs. The goals of the WIRP are to sustainably and cost-effectively address local and regional water supply and demand issues, reflect community values, and adapt to changing conditions.

4. Why is the WIRP Needed?  Reliability and costs for imported water are becoming more uncertain  Pasadena’s local groundwater is being reduced  WIRP is the source document for the City’s 2010 Urban Water Management Plan, which is required by state law to be submitted every five years

5. WIRP Stakeholder Input  A WIRP Advisory Committee, appointed by the Mayor, met 7 times to provide direction, input and ideas  Three (including this one) public meetings  Outreach via public polling on internet

6. Planning Assumptions  All plans require projections and forecasts to be made regarding growth, availability of water, price of water, etc.  California requires that utilities planning for water utilize “official” demographic projections  Pasadena recognizes these assumptions may not unfold exactly as planned

7. PWP’s Service Area  Pasadena Water & Power (PWP) serves the City and several other communities  WIRP represents a strategy to meet the entire service area

8. Service Area Demographics Source: 1990-2010, US Census and California Department of Finance 2015-2035, Southern California Association of Governments

9. Water Demand Forecast

10. Define Planning Objectives & Performance Measures Refine Analysis (create hybrids) Analyze Portfolios Raw Performance Score Card Rank Portfolios WIRP Evaluation Process Identify Supply Options (building blocks) Build Portfolios (Combinations of Options)

11. WIRP Objectives  Provide a reliable water supply  Maintain affordability, while addressing fairness and equity  Protect and enhance source waters and the environment  Protect cultural and recreational resources  Maximize efficiency of water use  Maintain quality of life and positive economic climate  Reduce risk and maximize opportunity  Reduce energy footprint for water operations

12. WIRP Options  Recycled water for irrigation & cooling towers  Recycled water for groundwater recharge  Expanded water conservation  Increased surface water diversions  Groundwater storage of imported water  Stormwater capture and groundwater recharge  Graywater  Water transfers (purchases from others)  Ocean desalination (agreement with coastal partner)  Increased reliance on imported water from MWD

13. Initial Portfolios Status Quo Represents the “do nothing” future, and includes only existing groundwater and surface water diversions (it has the heaviest emphasis on imported water from MWD). Minimize MWD Supply Represents the “do everything” future by maximizing use of all local options, as well as water transfers and ocean desalination. Maximize Stewardship Maximizes “green” solutions such as maximum water conservation, all stormwater best management practices and graywater, and also enhances habitat restoration with environmental streamflows. Low Cost Consists of all options that have lower or comparable unit costs to the current price of MWD water. Maximize Surface Water Supply and Groundwater Recharge Maximizes use of local surface water diversions and enhanced groundwater recharge. Non-potable Reuse (NPR) Maximizes recycled water to meet non-potable demands via a new non-potable water distribution system. Combined NPR and Indirect Potable Reuse (IPR) Maximizes recycled water for indirect potable reuse (via groundwater recharge), coupled with a smaller non-potable reuse system.

14. Hybrid Portfolios After initial portfolios were analyzed, several other portfolios were created and evaluated Hybrid 1 Combines best elements of top performing initial alternatives and optimizes the size of projects in order to provide maximum benefits at lower cost Hybrid 2 Starts by targeting top 10% of single-family residential users and applies very aggressive pricing in order to reduce demands by 70%, then implements other conservation programs to multifamily, commercial and the rest (90%) of single-family users.

15. Portfolio Rankings Hybrid 1 Max SW/GW Min MWD Supply Max Stewardship Low Cost Hybrid 2 NPR Recycled NPR/IPR Recycled Status Quo The larger the color bar, the better it achieves the objective below

16. Sensitivity of Ranking to Different Weights for Criteria Hybrid 1 Max SW/ GW Min MWD Supply Max Steward ship Low Cost Hybrid 2NPR NPR & IPR Status Quo A.C. Rank 123456789 Equal Rank 123568479 50% Reliab 123467589 30% Afford 128543679 50% Efficen 351264789

17. Sensitivity of Ranking to Different Weights for Criteria Hybrid 1 Max SW/ GW Min MWD Supply Max Steward ship Low Cost Hybrid 2NPR NPR & IPR Status Quo A.C. Rank 123456789 Equal Rank 123568479 50% Reliab 123467589 30% Afford 128543679 50% Efficen 351264789 This portfolio ranks number 1 in all but one of the scenarios, making it a preferred strategy for PWP

18. Overview of what is in the Preferred Strategy (Hybrid 1)  Aggressive water conservation  Devils Gate diversion to Eaton Canyon  Groundwater storage of imported water  Small phase 1 non-potable recycled water, with tunnel augmentation  Tertiary-treated recycled water for groundwater recharge  Stormwater projects

19. Aggressive Conservation Program  Convert about 70% of existing SF homes to comply with California Model Landscape Ordinance – through PWP rebates and rate structures  All new SF homes will have drought landscaped front yards, with warm season lawn (model landscape compliant) back yards – through ordinances and PWP rebates  Convert 60-70% of existing MF and Commercial landscapes to comply with California Model Landscape Ordinance – through PWP rebates and rate structures  Double the implementation of PWP’s current indoor conservation for single-family – through PWP rebates and ordinances  Continuation of PWP’s current indoor conservation for MF and Commercial – through PWP rebates  Individual meters for all new MF accounts – through ordinance

20. Devil’s Gate to Eaton Canyon  County conservation project to reduce discharges to ocean by storing water behind Devil’s Gate Dam (along Arroyo Seco)  Recharge water behind dam and provide environmental releases  Convey stored water to Eaton Wash spreading basins to help with flood management and additional recharge  Collect urban runoff/ stormwater flows along pipe conveyance

21. Groundwater Storage of Imported Water Source of Photo: PGSP Final Conceptual Design Report, October 2007  Known as the Pasadena Groundwater Storage Program  Build groundwater storage bank through spreading, injection, and in-lieu use  In-lieu means reduced groundwater pumping in some years in order to build storage (use an in-lieu source to meet demands)  Treated water spreading and some injection wells are already in place  Reduced MWD rate for recharge water  New extraction wells to recover stored water during shortage periods

22. Recycled Water  Recycled Purchases from LA-Glendale Water Reclamation Plant (Tertiary Treatment)  Non-potable Reuse: Phase 1 (Brookside Golf Course & customers adjacent)  Indirect Potable Reuse: Recharge at Eaton Canyon spreading grounds via LA County pipeline (Devil’s Gate to Eaton Canyon project) Phase 1 LA County Pipeline (Devil’s Gate to Eaton Canyon) Two proposed alignments shown

23. Stormwater Projects – Residential  Residential Cisterns: Collect rainwater from rooftops and store in 100 gallon cisterns for non-potable use  Residential Rain Gardens: Downspout from rooftop to garden bio-retention area (approx. 30 ft 2 )  Residential Infiltration strip/bioswale: Bio-retention strip at edge of lot to capture storm runoff and overwatering from property, implemented on a neighborhood scale PWP would provide rebates for ~10,000 homes (or 25 percent participation) for each type of residential option Source of photos: California Sea Grant Green Sheet #3 Surfrider Foundation Ocean Friendly Gardens Georgia Stormwater Management Manual

24. Stormwater Projects – Comm/Ind  Commercial Parking Lot Swales: Large bio-retention area to collect runoff from parking lot areas  Permeable Pavement Parking Lots PWP would provide rebates for:  30 percent participation of parking lot swales  20 percent participation of permeable pavement Photos provided by Sean Van Delist, Cement Council of Texas

25. 2035 Average Annual Supply Mix

26. Benefits of Preferred Strategy Benefits Status Quo Preferred Strategy (Hybrid 1) Annual Shortage Under Delta Restrictions (AFY) 7,500 (17%)0 Monthly Shortage Under MWD Shut Down (AFM) 2,000200 Annual Groundwater Recharge (AFY) 3,60015,500 Reduced Stormwater Pollution (AFY) 01,350 Greenhouse Gases (mt/yr) 42,40022,100 Compliant with 20 x 2020 NOYES Compliant with MWD Regional Planning (IRP) NOYES

27. Average Cost to PWP

28. Potential Climate Change Impacts  Greater outdoor water demand  Reduced imported water supplies  Lower groundwater levels Source: SIO data for Pasadena vicinity

29. Benefits of Preferred Strategy in Mitigating Climate Change Impacts  Reduces greenhouse gas emissions by almost 50% by 2035  Reduces outdoor demands through conservation, lessening impact of hotter temperatures  Develops recycled water, which is not affected by climate change  Increases storage in Raymond Basin

30. Implementation Issues  Uncertainty in growth projections  Rate structure re-examination  New conservation ordinances  Partnerships with Los Angeles County & Pasadena Public Works  Regulatory approval for indirect potable reuse  Outside funding from MWD, state & others

31. Adaptive Implementation  If growth and water supply issues unfold as assumed, implementation of Hybrid 1 should occur within next 20 years  If water demands do not increase as planned, only elements of Hybrid 1 that cost less than MWD imported water should be implemented  Other elements should then be phased in as needed

32. Draft WIRP Report Review  Draft report posted at: www.pwpweb.com/waterplan Sections 1-6 available now Section 7 available on Dec 9 th Public comments via on-line survey will be possible from Dec 9 th – Dec 16 th  WIRP will be presented to City Council in January 2011.

33. Comments On What You Have Seen So Far?